"Every day we go to speech therapy and physical therapy and occupational therapy. We're learning words and phrases, learning to sing," Mary Davis told NBC affiliate KTEN. "Of course, the music and the songs come easy for him, but just the enunciation of words. But he's working on it. He's got a heart of a warrior, and he doesn't stop."

The pair showed up at the Four Rivers Outreach fundraiser Thursday in Denison, which helps those fighting addiction.

Stars Steppin' Out

Davis said Travis can talk a little, and every day he gets a bit better.

"He knows that the road ahead of us is long and tedious, but he's up for the challenge. And he's never never shied away from it, never asked, 'Why me?'" Davis said.